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Represents a rule that checks for errors that are raised by a data source that implements INotifyDataErrorInfo.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
Thetype exposes the following members.
|Equals(Object)||Determines whether the specified Object is equal to the current Object. (Inherited from Object.)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)|
|GetHashCode||Serves as a hash function for a particular type. (Inherited from Object.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|MemberwiseClone||Creates a shallow copy of the current Object. (Inherited from Object.)|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
|Validate(Object, CultureInfo)||Performs validation checks on a value. (Overrides ValidationRule.Validate(Object, CultureInfo).)|
|Validate(Object, CultureInfo, BindingExpressionBase)||Performs validation checks on a value. (Inherited from ValidationRule.)|
|Validate(Object, CultureInfo, BindingGroup)||Performs validation checks on a value. (Inherited from ValidationRule.)|
The WPF data binding model enables you to associate ValidationRules with a Binding or BindingGroup object. The class is a built-in rule that checks for exceptions that are thrown during the updates of the binding source property. You can provide custom logic to specify how the binding engine handles these exceptions by using a UpdateSourceExceptionFilterCallback. For more information, see UpdateSourceExceptionFilter.
An alternative syntax to setting the explicitly is to set the ValidatesOnExceptions property to true on your Binding, MultiBinding, or BindingGroup object. By default, the value of ValidatesOnExceptions is true, so you do not need to explicitly use a .
Windows 8 Consumer Preview, Windows Server 8 Beta, Windows 7, Windows Server 2008 SP2, Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.